SAE J431 automotive gray cast iron, SAE grade G4000

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SAE J431 automotive gray cast iron, SAE grade G4000
Categories:	Metal; Ferrous Metal; Cast Iron; Gray Cast Iron
Material Notes:	If Carbon or Silicon is on the high % range end, the other should be on the low % end. Properties determined from as-cast test bar 30.5 mm diameter. Pearlitic microstructure. Applications include diesel engine castings, liners, cylinders, and pistons. 1180 kg minimum transverse load, 6.9 mm minimum deflection.
Key Words:	UNS F10008, ferritic, pearlitic, soft iron castings
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Physical Properties	Metric	English	Comments

Density	7.15 g/cc	0.258 lb/in³	Typical for Gray Cast Iron

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	217 - 269	217 - 269
Hardness, Knoop	271	271	Converted from Brinell
Hardness, Rockwell C	19.3	19.3	Approximated. Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.
Hardness, Vickers	256	256	Approximated. Converted from Brinell hardness.
Tensile Strength, Ultimate	>= 276 MPa	>= 40000 psi

Component Elements Properties	Metric	English	Comments
Carbon, C	3.0 - 3.3 %	3.0 - 3.3 %
Iron, Fe	94 %	94 %
Manganese, Mn	0.70 - 1.0 %	0.70 - 1.0 %
Phosphorus, P	0.070 %	0.070 %
Silicon, Si	1.8 - 2.1 %	1.8 - 2.1 %
Sulfur, S	0.15 %	0.15 %

References for this datasheet.

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MCFE05 / 10399

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